The Spotlight: Genetic Informants

Just how long is the Long Arm of the Law? Again and again, criminals are finding out ? arrested for decades-old crimes thanks to a particular form of DNA evidence: Genetic Genealogy. Now, on the anniversary of the first-ever murder to test this technique in a court of law, the Spotlight talks with a Pulitzer Prize-winning author about the origins of genetic genealogy and where it goes from here ? there are other uses besides murder cases. Plus we show you the tool now being deployed in Washington state that?s finding evidence where none was thought to be present: just how does the M-VAC system work?